Found these a few years back on the same creek that I've found many points. The San Saba and Shumla are the only two that I've found down in this area. The San Saba has a pretty bad hinge fracture. That poor Indian must have chewed one too many mesquite beans.
It sure is Travis. I've found close to 200 complete points and I don't even remember how many broken ones. That's where I found the Barber, Angostura drills, Andice (impact fractured), the best Langtry I've found, Marshalls, etc. Clear up to Perdiz. That one camp is a third of a mile long on that creek and there's several other camps there further east. Just haven't gotten permission yet to hunt them.
So many varieties of points over a long distance sounds like hunters of all the ages were generally following along that drainage in their hunting forays..( early colonists too ? )
Your pic is another interesting study of large and small points around the same time frame .
The small base tang notches came up a while back, I brought the old posting back up, see : CORNER TANG THEORY
The post is a bit shy of pictures but bear with it and start reading the input partway down from SH, Paleoboy & Outdoor guy.